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. 2020 Feb 7;117(6):83–88. doi: 10.3238/arztebl.2020.0083

Table 2. Evidence: Catheter-associated UTIs / Updated: 17 July 2019.

Study
Design
Location
Dates
Study aim Patient information Information on intervention Results Authors' Study conclusion Comments
Studies on duration of catheterization
Ahmed
2014
RCT
Egypt
April 2010 to December 2012
if immediate (0 h) versus intermediate (6 h) versus delayed (24 h) removal of an indwelling catheter can affect the rate of re-catheterization Women with uncomplicated abdominal hysterectomy
On the morning of surgery, all patients received a single dose of prophylactic antibiotic in the form of ceftriaxone 1 g intramuscularly.
Group A (73 patients): catheter removal immediately after surgery (0 h)
Group B (81 patients): catheter removal 6 h post-OP
Group C (67 patients): catheter removal 24 h post-OP
size 12 latex Foley's catheter
Symptomatic UTI, n (%):
A: 1 (1,4)
B: 3 (3,7)
C: 10 (14,9)
(p=0.008)
Removal of urinary catheter 6 h post-OP appears to be more advantageous than early or late removal in cases of uncomplicated total abdominal hysterectomy.
Alessandri 2006
RCT
Italy
September 2003 and March 2004
comparing immediate versus delayed catheter removal Women with hysterectomy various benign diseases
All patients received a single dose of antibiotic prophylaxis before the operation.
Group A (32 patients): immediate removal of the catheter in the operating room.
2. Group B (32 patients): removal of catheter at 6 h after the operation.
3. Group C (32 patients): removal of catheter at 12 h after the operation.
16F latex catheters with a 10 ml balloon were used
Symptomatic urinary infection, n (%):
A: 1/32 (3.1)
B: 4/30 (13.3)
C: 5/32 (15.6)
(p NS)
There could be an association between necessity of recatheterization and the type of surgery (VH) or the type of anesthesia (spinal). Despite recatheterization rate, early removal of in-dwelling catheters immediately after uncomplicated hysterectomy seems to decrease first ambulation time and hospital stay.
Bray 2017
RCT
UK
to compare immediate removal with the use of an indwelling catheter. patients admitted for prolapse surgery via the vaginal route
one dose of intraoperative prophylactic antibiotics
Group A (29 patients): Suprapubic catheter, until day 2 post-OP
Group B (31 patients): immediate removal
Rate of symptomatic bacteriuria (n):
A: 15
B: 5
(p<0.01)
After vaginal surgery for pelvic organ prolapse, the majority of patients do not require extended catheterisation. Early removal of a catheter reduces urinary tract infection and significantly decreases hospital stay
Chai 2011
RCT
Hong Kong
November 2007 and September 2009
To assess whether early or immediate removal of 12F indwelling Foley catheter after total abdominal hysterectomy affects the level of subjective pain assessment postoperatively women undergoing total abdominal hysterectomy for various benign gynecological diseases Group A (35 patients): catheter removal immediately post-OP
Group B (35 patients): catheter removal on post-OP day 1, i.e. 24 h
latex 12F with a 10ml balloon Foley catheter under aseptic technique
Routine prophylactic antibiotics were not given.
The incidence of symptomatic urinary tract infection did not differ between the two groups
UTI, n (%):
A: 1 (2.9)
B: 3 (8.6)
(p NS)
There are pros and cons regarding the policy of one-day in-dwelling catheterization compared to immediate catheter removal.
Dunn 2003
RCT
USA January 1998 to December 2001
whether the immediate removal of indwelling catheters after OP affects the rate of recatheterization, febrile morbidity, UTI, pain. women with hysterectomy Group A: immediate catheter removal
Group B: catheter removal day 1 post-OP
UTI:
A: 3
B: 3
(p NS)
Early removal of indwelling catheters after OP no associated with an increased rate of UTIs
El-Mazny 2014
RCT
Egypt
November 2012 to March 2014
To compare immediate and 12 h postoperative removal of urinary catheter after elective cesarean section. women admitted for primary or repeat elective cesarean section Group A (n = 150): catheter removal immediately
Group B (n = 150): catheter removal 12 h post-OP
Foley urethral catheter (French size 16)
all received antibiotic prophylaxis
Postoperative urinary complications (A, B, p value) number (%):
Dysuria:
11 (7.3), 24 (16.0), 0.030
Burning on micturition:
4 (2.7), 15 (10.0), 0.016
Urinary frequency:
3 (2.0), 12 (8.0), 0.031
Immediate removal of urinary catheter after elective cesarean section is associated with lower risk of urinary infection and earlier postoperative ambulation.
Fernandez 2006
SR on RCT and observation al search date July 2004
to assess the effect of duration of catheterization on urinary retention. 8 studies patients of all ages and in any setting (hospital, community, and nursing home) various durations of catheterization prior to the removal of short-term indwelling urethral catheters Four trials demonstrated no statistically significant difference in the incidence of urinary tract infection between the groups in patients after TURP (RR 0.55, 95% CI 0.30 to 1.03). However, 1 small trial reported that patients who had their indwelling urethral catheters removed 5 days after rectal resection had a significantly higher incidence of urinary tract infection compared to those who had their indwelling urethral catheters removed 1 day after the surgery (RR 0.48, 95% CI 0.27 to 0.85). No significant differences in patient outcome were found, but the timing of catheter removal is a balance between avoiding infection by early removal and circumventing voiding dysfunction by later removal. Shorter catheterizations appear to reduce mean length of hospital stay.
Hakvoort 2004
RCT
Netherlands
February 2000 and July 2001
To determine whether prolonged urinary bladder catheterisation after vaginal prolapse surgery is advantageous. Patients undergoing anterior colporrhaphy Group A (45 patients): prolonged catheterization, removal on day 3
Group B (47 patients): not prolonged catheterization, removal in the morning post-OP
A: 18 (40%) B: 2 (4%) OR = 14,786, 95% CI 3.187–68.595 The disadvantages of prolonged catheterisation outweigh the advantages, therefore, removal of the catheter on the morning after surgery may be preferable and longer term catheterisation should only be undertaken where there are specific indications.
Iorio 2000
RCT
USA
1993 to 1998
to determine which method minimized complications and maximized cost effectiveness. patients undergoing unilateral total knee arthroplasty Group A (306 patients): preoperative insertion of an indwelling bladder catheter for 24 hours
Group B (346 patients): catheter inserted postoperatively on an as needed basis only if symptoms of urinary retention developed
B: 66% (229 of 346) of these patients required catheterization
UTI:
A: 5 (1.6%)
B: 6 (1.7%)
Routine preoperative insertion of a catheter into the urinary bladder may not be warranted in patients undergoing total knee arthroplasty. It is more cost effective to observe patients for urinary retention and then insert a catheter. If subsequent catheterization is necessary, intermittent straight catheterization should be considered to avoid urinary tract infections.
Sekhavat 2008
RCT
Iran
December 2002 to November 2004
To assess whether immediate removal of an indwelling catheter after anterior colporrhaphy influences the rate of re-catheterisation and symptomatic urinary tract infections 90 women who underwent anterior colporrhaphy and aged between 40 and 50 years A: removal immediately after surgery (n= 45)
B: removal at least 24 h after OP (n=45)
UTI (positive urine culture):
A: 4,5%
B: 15,5%
P= 0,01
Early removal of an indwelling catheter immediately after anterior colporrhaphy was not associated with adverse events and increased rate of re-catheterisation. In this group, symptomatic urinary tract infection was significantly lower. Moreover, early removal of indwelling catheters immediately after operation seemed to decrease the ambulation time and hospital stay.
Weemhoff 2011
RCT, multicenter
The Netherlands
January 2006 and
to compare the number of temporary catheter replacements and urinary tract infections after indwelling catheterization for 2 versus 5 days following an anterior colporrhaphy 246 patients with a cystocele undergoing an anterior colporrhaphy A: catheter for 2 days
B: catheter for 5 days
Any kind of urinary catheter
A: 22%
B: 37%
OR 0.5 (CI 0.3-0.9, p = 0.02)
Removal of an indwelling catheter after 2 versus 5 days following anterior colporrhaphy is associated with more temporary catheter replacements, but less urinary tract infections and a shorter hospital stay.
September 2008
Studies on type of catheter
Baan 2003
RCT
Netherlands
to compare the risk of urinary tract infections and patient satisfaction among patients with suprapubic and transurethral catheters after laparotomy. patients who underwent a major abdominal procedure, in particular for gastrointestinal diseases Removal of the catheter was allowed according to the general condition or when the epidural catheter was removed for at least 24 h to prevent urine retention. Group A (75 patients): suprapubic catheters
Group B (71 patients): transurethral catheters
Urinary tract infection:
A: 9/75 (12%)
B: 8/71 (11%)
(RR = 1.03; 95% CI = 0.64–1.67, p NS)
The incidence of a urinary tract infection between a suprapubic catheter and a transurethral catheter in patients undergoing major surgery was not different.
Darouiche 2006
RCT,
multicenter
to assess the impact of using the StatLock securing device on symptomatic UTI Adult patients with spinal cord injury who were diagnosed with neurogenic bladder and required a longterm indwelling transurethral or suprapubic bladder catheter Group A (60 patients): indwelling bladder catheters secured in place by using the StatLock device
Group B (58 patients): traditional methods that included tape, Velcro strap, Cath-Secure or none.
UTI:
A: 8 (13.3)
B: 14 (24.1)
(RR 0.55, 95% CI: 0.25-1.22, p NS).
Although the trial size precluded the demonstration of statistically significant differences, the finding of a 45% reduction in the rate of symptomatic UTI in patients who received the StatLock securing device is clinically relevant
Dixon 2010
RCT
UK
To compare the use of intermittent urethral catheterization with indwelling suprapubic catheterization women undergoing surgery for urodynamic stress incontinence or uterovaginal prolapse Group A (38 patients): suprapubic catheter, 48 hours post-OP
Group B (37 patients): urethral catheterization intermittently post-OP
UTI:
A: 9
B: 13
(p NS)
The use of intermittent catheterization following urogynaecological surgery is associated with a more rapid return to normal micturition and a shorter hospital stay, although the clinical significance of the difference is perhaps limited.
Fernandez 2005
SR on RCT search date July 2004
to determine the effects of clamping short-term indwelling urethral catheters before removal on the incidence of urinary tract infection, time to first void, voiding dysfunction, incidence of recatheterization, and the length of hospital stay clamping before removal of shortterm indwelling urethral catheters in people of all ages and in any setting (hospital, community, an nursing home) 3 trials included 1 trial on CA-UTI:
Group A: Removal of indwelling catheter within 24 hours after free drainage
Group B: Removal of indwelling catheter within 72 hours after
Group C: Removal of indwelling catheter within 24 hours + bladder reeducation
no significant difference in the incidence of UTI (1 trial, 106 women):
A: 3/37 (8%)
B: 6/36 (17%)
C: 3/33 (9%)
The evidence for clamping indwelling urethral catheters before removal remains equivocal. Given the current state of evidence, procedures relating to clamping of indwelling urinary catheters should not be initiated. Until stronger evidence becomes available, however, practices relating to clamping indwelling urethral catheters will continue to be dictated by local preferences and cost factors.
Gong 2017
RCT
China
February 2012–April 2015
To determine the effect of clamping the indwelling urinary catheter before its removal on bladder reconditioning adult patients with cervical cancer after radical hysterectomy Group A (70 patients): indwelling urinary catheters clamped intermittently for 48 hours before removal
Group B (128 patients): indwelling urinary catheters removed without clamping
incidence of urinary tract infection:
A: 22.9%
B: 20.3%
(p NS)
Bladder recondition through indwelling urinary catheter clamping may not restore bladder function in patients after radical hysterectomy.
Hakvoorta 2011
RCT,
multicenter Netherlands
To compare clean intermittent catheterisation with transurethral indwelling catheterisation for the treatment of abnormal post-void residual bladder volume (PVR) following vaginal prolapse surgery. patients older than 18 years experiencing abnormal PVR following vaginal prolapse surgery, with or without the use of mesh.
Patients with a PVR of more than 150 ml after their first void were randomised
Group A (45 patients): clean intermittent catheterisation (CIC) for 3 days
Group B (45 patients): transurethral indwelling catheterisation (TIC) for 3 days
All patients received prophylactic antibiotics during surgery. Catheter was removed on the first postoperative day.
A 14 french silicone transurethral indwelling catheter and a vaginal gauze were inserted directly after surgery.
UTI:
A: 5 (12)
B: 13 (33)
(p= 0.03)
Clean intermittent catheterisation is preferable over indwelling catheterisation for 3 days in the treatment of abnormal PVR following vaginal prolapse surgery.
Halleberg 2013
RCT with costeffectivenes s analysis
Sweden
September 2009 and May 2011
to investigate differences between intermittent and indwelling urinary catheterisation in hip surgery patients in relation to nosocomial UTI and costeffectiveness. patients undergoing hip fracture surgery or hip replacement surgery that was due to osteoarthritis, aged >50 No antibiotic prophylaxis during surgery:
A: 12 (14)
B: 8 (10)
Group A (89 patients): intermittent urinary catheterisation
Group B (93 patients): indwelling urinary catheterisation
Foley catheter (Charriere 14) was inserted, with aseptic technique, after preoperative antiseptic showering
UTI:
A: 8/85 (9.4)
B: 10/85 (11.8)
absolute difference 2.4 (-6.9 to 11.6%)
Both indwelling and intermittent methods could be appropriate in clinical practice. Both methods have advantages and disadvantages but by not using routine indwelling catheterisation, unnecessary catheterisations might be avoided in this patient group.
Healy 2012
SR on RCT
search date March 2012
to determine the benefits of suprapubic catheterization compared with urethral catheterization women undergoing gynecologic surgery
12 RCTs included
Group A: suprapubic catheterization
Group B: urethral catheterization
UTI: OR 0.30 (0.18–0.51), favors suprapubic catheterization Based on the best available evidence, no route for bladder drainage in gynecologic patients is clearly superior. The reduced rate of infective morbidity with suprapubic catheterization is offset by a higher rate of catheter-related complications and crucially does not translate into reduced hospital stay. As yet, there are insufficient data to determine which route is most appropriate for catheterization
Hunter 2013
Scoping review on all designs
Search date May 2011
to examine research activity comparing suprapubic catheterization to any other method of chronic bladder emptying such as intermittent and indwelling catheterization adults A: Suprapubic catheters
B : Urethral Catheters, other methods
Despite varying definitions and the nonrandomized or retrospective research designs, the clinical evidence on UTI and long-term use of SP catheters provides some evidence of no difference between urethral and SP catheters. Most studies focused on clinical urologic issues rather than patient understanding of suprapubic catheter management, satisfaction, stoma and skin care, or health related QoL.
Kidd 2015 SR Cochrane of RCT search date January 2015 To determine the advantages and disadvantages of alternative routes of short-term bladder catheterisation adults requiring short-term urethral catheterisation in hospital for any reason 42 trials included Group A: Suprapubic catheterisation Group B: Indwelling urethral catheterisation
we define 'short-term' as intended duration of catheterisation for 14 days or less,
UTI: RR 1.01 (0.61 to 1.69) based on 575 patients (5 studies) Suprapubic catheters reduced the number of participants with asymptomatic bacteriuria, recatheterisation and pain compared with indwelling urethral. The evidence for symptomatic urinary tract infection was inconclusive. For indwelling versus intermittent urethral catheterisation, the evidence was inconclusive for symptomatic urinary tract infection and asymptomatic bacteriuria. No trials reported pain. The evidence was inconclusive for suprapubic versus intermittent urethral catheterisation. Trials should use a standardised definition for symptomatic urinary tract infection. Further adequatelypowered trials comparing all catheters are required, particularly suprapubic and intermittent urethral catheterisation. Niel-Weise 2005_Urinary Ist die Vorgänger Version des Reviews
Shepherd 2017 SR Cochrane RCTs and quasi-RCTs Search date May 2016 To determine if certain washout regimens are better than others in terms of effectiveness, acceptability, complications, quality of life and critically appraise and summarise economic evidence for the management of longterm indwelling urinary catheterisation in adults. adults (+ 16 years) in any setting with an indwelling urethral or suprapubic catheter for more than 28 days comparing catheter washout policies (e.g. washout versus no washout, different washout solutions, frequency, duration, volume, concentration, method of administration) Number of participants with symptomatic UTI: 1. RCT: 1.1. any washout versus no washout: 0.0 [0.0, 0.0] 1.2. saline washout versus no washout: 0.0 [0.0, 0.0] 1.3. citric acid washout versus no washout: 0.0 [0.0, 0.0] Data from seven trials that compared different washout policies were limited, and generally, of poor methodological quality or were poorly reported. The evidence was not adequate to conclude if washouts were beneficial or harmful. Further rigorous, high quality trials that are adequately powered to detect benefits from washout being performed as opposed to no washout are needed. Trials comparing different washout solutions, washout volumes, and frequencies or timings are also needed. The high risk of bias of the included studies resulted in the evidence being graded as low or very low quality. //no events were reported
Stekkinger 2011 RCT The Netherlands To compare the effect of suprapubic and transurethral catheterization on postvoid residual volumes (PRVs) after cystocele repair women who underwent pelvic organ prolapse surgery including cystocele repair A: suprapubic catheter (n = 64) B: transurethral catheter (n = 62) Urinary tract infections: A: 9,4% B: 9,7% P=0,93 Suprapubic catheterization was comparable to transurethral catheterization in the prevention of postoperative voiding dysfunction after vaginal prolapse surgery, but it was associated with a higher rate of complications
Van den Eijkel 2006 SR on RCTs Search date February 2006 To assess the effects of catheter valves Adults >16 yrs A: catheter valve B: catheter bag drainage system 2 RCTs (only one assessed UTIs: Wilson 1997) No significant differences for UTIs in the comparison of catheter valve vs standard continuous drainage bag
Wang 2016 SR on RCT Search date prior to May 2016 to identify the necessity of bladder clamping prior to removal of urinary catheter in patients with short-term indwelling catheter. Adult inpatient Indwelling urinary catheter up to 14 days A: Regular clamp on urinary catheter and clamp off before removal B: Keeping the urinary catheter on free draining until removal All studies on surgical patients. No significant difference between clamping and unclamping group was found (4 studies): OR 0.76, 95% CI (0.33, 1.73) no significant difference was found between the clamping and unclamping groups in the outcomes of recatheterization, urinary retention, UTI and patients' subjective perceptions of voiding related symptoms. The limited evidence obtained from this review does not provide a robust base to overrule the existing guidelines.
Zhang 2015 SR on RCTs/MA Search date January 2015 to compare the rates of urinary tract infection (UTI) and postoperative urinary retention (POUR) in patients undergoing lower limb arthroplasty after either indwelling patients undergoing total joint arthroplasty in the lower limbs A: indwelling catheterization B: intermittent catheterization 9 RCTs (on 1771 patients) no significant difference in the rate of UTIs (P>0.05): RR 1.23 (0.85-1.76), favours intermittent catheterization indwelling urinary catheterization with removal 24 to 48 hours postoperatively did not increase the risk of UTI.
urinary catheterization or intermittent urinary catheterization.
Studies on prophylaxis
Al-Habdan 2003 RCT Arabia To assess whether catheter type can make a difference in infection rates patients undergoing orthopedic and trauma surgery requiring post-OP indwelling catheters prophylactic antibiotics were used 30 min preOP and continued for 24 h post-OP Group A (50 patients): antibiotic-impregnated catheters (nitrofuroxone Foley) Group B (50 patients): nonantibiotic-impregnated catheters (latex Foley) Number of infections: A: 0 B: 6 (p=0.028) Use of nitrofuroxone-impregnated cathetets was successful in reducing nosocomial UTIs, the impact of cost containment can be enormous.
Beattie 2011 SR of SR and RCT search date March 2008 to determine whether there was enough evidence to conclude that silveralloy urinary catheters reduce catheter-associated urinary tract infections compared with silicone or latex urinary catheters in adult inpatients. short-term hospitalised adult patients with < 2 weeks catheter use silver-alloy urinary catheters versus standard silicone or latex urinary catheters primary studies included: 6 SR/MA, 5 RCT No study was able to clearly demonstrate that in short-term hospitalised adult patients, silver-alloy urinary catheters reduce CAUTI compared with standard silicone or latex urinary catheters. included studies with significant heterogeneity or poor-quality. Owing to the poor quality of some individual studies included in other systematic reviews and the inability to carry out meta-analysis because of significant heterogeneity, definitive conclusions cannot be drawn from the study.
Bonfill 2017 RCT, 14 hospitals, international November 2012 to December 2015 to assess the efficacy of SAC urinary catheters for preventing catheterassociated urinary tract infections. Patients with traumatic or medical spinal cord injury (SCI) requiring an indwelling urinary catheter for at least 7 days Group A (243 patients): Antiseptic silver alloy-coated (SAC) silicone urinary catheters Group B (246 patients): silicone or silicone-latex catheters UTI: A: 18/243 B: 19/246 (OR 0.96, 95% CI 0.49–1.87, p NS) Antibiotic prophylaxis and UTI: yes: 6/184
no: 31/305
The results of this study do not support the routine use of indwelling antiseptic SAC silicone urinary catheters in patients with SCI. However, UTIs associated to longterm urinary catheter use remain a challenge and further investigations are still needed.
Brosnahan 2004 Cochrane SR of RCT search date 2003 Types of urethral catheters for management of short- term voiding problems in hospitalised adults Hospitalised adults with an indwelling urethral catheter of short-term duration (less than or equal to fourteen days duration, or other temporary shortterm use as defined by the trialists). 17 included involving 4237 adults plus one large cluster- randomised cross-over trial on 27,878 adults. antiseptic impregnated
catheters vs standard
catheters (n=11 trials), antibiotic impregnated
catheters vs standard
catheters (n=1 trial) comparison of different standard catheters (n=6 trials). The antiseptic catheters were either impregnated with silver oxide or silver alloy.
UTI for ANTISEPTIC CATHETER VERSUS STANDARD CATHETER: RR 0.60 [0.50, 0.73], I2 =49%, based on 7 trials, favours antiseptic alloy UTI for ANTIBIOTIC-IMPREGNATED CATHETER (minocycline + rifampicin) VERSUS STANDARD CATHETER (silicone): RR 0.20 [0.03, 1.63], 1 trial the use of silver alloy indwelling catheters for catheterising hospitalised adults shortterm reduces the risk of catheter acquired urinary tract infection. Further economic evaluation is required to confirm that the reduction of infection compensates for the increased cost of silver alloy catheters.
Cao 2018 SR and Network MA of RCT search date December 2017 prevention of CAUTIs through a network metaanalysis of the relevant literature based on the Bayesian method. Hospitalized patients (>18 years) with indwelling urinary catheters (IDCs) Group A: an antiseptic such as iodine, chlorhexidine, nitrofurazone, etc. was used to clean the meatal, peri-urethral, or perineal areas before IDC insertion or intermittent catheterization, or during routine meatal care Group B: metal area was cleaned with non-medicated agents such as sterile water, tap water, saline, etc. 33 trials (6490 patients) with 7 different methods of urethral cleaning versus disinfection were eligible for inclusion no heterogeneity among studies observed no difference in the incidence of CAUTIs when comparing the different urethral cleaning methods versus disinfection (P > 0.05 for all). However, chlorhexidine ranked first in the results of the Bayesian analysis and is recommended for preventing CAUTIs. Current evidence suggests that there are no significant differences among different urethral cleaning versus disinfection methods with regard to CAUTI incidence rates.
Cardenas 2011 RCT, 15 centers US and Canada April 2006 and July 2009 To investigate whether intermittent catheterization (IC) with a hydrophiliccoated catheter delays the onset of the first symptomatic urinary tract infection (UTI) and reduces the number of symptomatic UTIs in patients with acute spinal cord injury (SCI) compared with IC with standard, uncoated catheters. with traumatic SCI of less than 3 months' duration who use intermittent catheterization (IC) The study duration consisted of 2 periods: an institutional period (in acute care or a rehabilitation unit) and a community period (after discharge from the hospital or rehabilitation unit). Group A (108 patients): catheter (SpeediCath) was a sterile, ready-to-use, hydrophiliccoated, polyurethane Nelaton catheter. The coating consists primarily of polyvinyl-pyrrolidone Group B (116 patients): catheter (Conveen) was a sterile, uncoated, PVC Nelaton catheter UTIs/ mo*: Group A: 0.479 (99/206.7) Group B: 0.478 (167/349.2) (p NS) The use of a hydrophilic-coated catheter for IC is associated with a delay in the onset of the first antibiotic-treated symptomatic UTI and with a reduction in the incidence of symptomatic UTI in patients with acute SCI during the acute inpatient rehabilitation. Using a hydrophilic-coated catheter could minimize UTI-related complications, treatment costs, and rehabilitation delays in this group of patients, and reduce the emergence of antibiotic-resistant organisms. *UTI/mo is a ratio of the total number of UTIs in the group divided by the total number of months in the period in the study group.
Cheung 2008 RCT Hong Kong to compare the risk of acquiring symptomatic UTIs through the conventional practice of using 0.05% chlorhexidine gluconate versus sterile water for periurethral cleansing before insertion of a urinary catheter. adults receiving community nursing services, requiring long-term indwelling urinary catheter Group A (12 patients): 0.05% chlorhexidine gluconate Group B (8 patients): sterile water Latex catheters were used in this study. none of the subjects in the 2 groups developed symptomatic bacteriuria Using sterile water to clean the periurethral area before catheterization among home care patients will not increase the risk for urinary tract infections.
Chung 2012 RCT Taiwan to evaluate the effect of rice vinegar administered via nasogastric feeding tube on catheterassociated bacteriuria in patients with longterm urinary catheterization adult patients from a long-term care facility Group A (30 patients): vinegar, 100 ml of diluted rice vinegar each day for 4 weeks Group B (30 patients): usual care two-way latex Foley catheter for more than 30 days UTI: A: 0/25 B: 3/19 Medicinal use of vinegar may decrease the risk of symptomatic UTI, but further study is needed to determine the effects of ingesting vinegar for a longer period and with a larger sample size.
Dieter 2014 RCT USA August 2011 through February 2013 To evaluate whether nitrofurantoin prophylaxis prevents postoperative urinary tract infection (UTI) in patients receiving transurethral catheterization after pelvic reconstructive surgery. participants undergoing pelvic reconstructive surgery Group A (81 patients): 100 mg nitrofurantoin once daily during catheterization Group B (78 patients): placebo once daily during catheterization UTI within 3 weeks of surgery: A: 22% B:13% (RR 1.73, 95% CI 0.85–3.52, p NS) Prophylaxis with daily nitrofurantoin during catheterization does not reduce the risk of postoperative UTI in patients receiving short-term transurethral catheterization after pelvic reconstructive surgery.
Fasugba 2017 SR on RCT search date December 2015 to assess the effectiveness on antiseptic cleaning before urinary catheter insertion and during catheter use for CAUTI prevention 14 studies included patients requiring short or long term IDC or intermittent catheterisation in hospital, community settings and long term care facilities Group A: antiseptic catheter Group B: non-antiseptic catheter CAUTI: A vs B: OR 0.90 (95% CI 0.73-1.10, p NS) no benefits of using antiseptic over nonantiseptic for metal cleaning for CAUTI prevention
Foxmann 2015 RCT USA August 2011 and January 2013 to assess the efficacy of cranberry juice capsules in preventing UTI post surgery. Women with elective gynecologic surgery Group A: cranberry capsules two times a day, for 6 weeks post-OP Group B: placebo urinary catheter insertion (as per hospital protocol)
prophylactic antibiotics pre-OP
The occurrence of UTI was significantly lower in the cranberry treatment group compared to the placebo group (15/80 (19%) versus 30/80 (38%); OR=0.38; 95% CI: 0.19, 0.79; p=0.008) OR=0.42; 95% CI: 0.18, 0.94 [adjusted] Among women undergoing elective benign gynecologic surgery involving urinary catheterization, use of cranberry extract tablets during the postoperative period reduced the rate of UTI by half
Gunnarsso n 2017 RCT Sweden July 2009 and June 2013 to investigate whether intake of cranberry juice concentrate preoperatively decreases the incidence of postoperative UTIs in hip fracture patients that received a urinary catheter. Female patients, aged 60 years and older, with hip fracture Group A: two capsules of 550 mg of cranberry powder t.i.d. until 5 days postoperatively. Group B: two capsules of placebo t.i.d. until 5 days postoperatively. The proportion of patients with positive culture at either day 5 or day 14 postoperatively where 19 of 50 (38%) and 23 of 61 (38%) (p=0.975, RR 0.988, 95% CI 0.457– 2.135) Cranberry concentrate does not seem to effectively prevent UTIs in female patients with hip fracture and indwelling urinary catheter.
Jahn 2012 SR Cochrane of RCT search date March 2011 to determine which type of indwelling urinary catheter is best to use for long-term bladder drainage in adults. Adults with indwelling urethral or suprapubic catheters for more than 30 days, irrespective ofprimary disease and care setting. Three trials were included, involving 102 adults in various settings. Group A: Silicone catheter Group B: Silver alloyed catheter UTI: RR 1 (0.83 to 1.2)
based on 20 patients (1 study)
Very few trials have compared different types of catheter for long-term bladder drainage. All trials were small and showed methodological weaknesses. Therefore, the evidence was not sufficient as a reliable basis for practical conclusions. Further, better quality trials are needed to address the current lack of evidence in this clinically important area
Johnson 2006 SR on RCT To assess currently marketed antimicrobial urinary catheters for preventing catheterassociated UTI 12 trials were included (on 13392 patients) catheters included: silver hydrogel–coated latex, silver hydrogel–coated silicone, silver Foley catheter (silver hydrogel silicone), nitrofurazonecoated silicone They compared nitrofurazone-coated silicone (n = 3) or silver-coated latex (n = 9) catheters with silicone or latex catheters. No study addressed symptomatic UTI. According to fair-quality evidence, antimicrobial urinary catheters can prevent bacteriuria in hospitalized patients during short-term catheterization, depending on antimicrobial coating and several other variables. Older data probably lack current relevance. Cost implications and effect on infectious complications remain undefined.
Karchmer 2000 RCT, crossover USA November 1996 to November 1997 To assess the efficacy of a silver-alloy, hydrogel-coated latex urinary catheter for the prevention of nosocomial catheterassociated UTIs. hospitalized patients Group A: silver-alloy, hydrogelcoated latex Foley catheters Group B: silicone-coated (uncoated) latex catheters 1-month washout period during which all wards were stocked with uncoated catheters. In the second 6 months of the study, group 1 wards used uncoated catheters and group 2 wards had silvercoated catheters. infection per 1000 patient-days: RR 0.79 (95% CI, 0.63-0.99; P=.04) for study wards randomized to silver-coated catheters compared with those randomized to uncoated catheters. RR per 100 silver-coated catheters used on study wards compared with uncoated catheters was 0.68 (95% CI, 0.54-0.86; P=.001). The risk of infection declined by 21% among study wards randomized to silvercoated catheters and by 32% among patients in whom silver-coated catheters were used on the wards. Use of the more expensive silver-coated catheter appeared to offer cost savings by preventing excess hospital costs from nosocomial UTI associated with catheter use.
Lam 2014 SR Cochrane on RCT to compare the effectiveness of different types of indwelling urethral catheters in reducing the risk ofUTI and to assess their impact on other outcomes in adults who require short-term urethral catheterisation in hospitals. hospitalized patients
26 trials included (12,422 patients)
A: Antiseptic-coated indwelling urethral catheters versus standard indwelling urethral catheters B: Antimicrobial-impregnated indwelling urethral catheters versus standard indwelling urethral catheters C: Antimicrobial-impregnated indwelling urethral catheters versus antiseptic-coated indwelling urethral catheters D: One type of standard indwelling urethral catheter versus another type of standard indwelling urethral catheter CAUTI: A: RR 0.99, 95% CI 0.85 to 1.16 B: RR0.84, 95%CI 0.71 to 0.99 C: RR 0.84, 95% CI 0.71 to 1.00 D: None of the trials comparing standard catheters versus other types of standard catheters measured symptomatic CAUTI. Silver alloy-coated catheters were not associated with a statistically significant reduction in symptomatic CAUTI, and are considerably more expensive. Nitrofurazone-impregnated catheters reduced the risk of symptomatic CAUTI and bacteriuria, although the magnitude of reduction was low and hence may not be clinically important. However, they are more expensive than standard catheters. They are also more likely to cause discomfort than standard catheters.
Lusardi 2013 SR Cochrane on RCT To determine if certain antibiotic prophylaxes are better than others in terms of prevention of urinary tract infections, complications, quality of life and costeffectiveness in shortterm catheterisation in adults. All adults requiring short-term urinary urethral and supra-pubic catheterisation (up to and including 14 days) in hospital 6 RCT on 789 participants included The interventions considered were: 1. antibiotic prophylaxis versus no prophylaxis; 2. antibiotic prophylaxis with antibiotic A versus giving antibiotic prophylaxis with antibiotic B; 3. antibiotic prophylaxis at catheterisation only versus antibiotic prophylaxis throughout the catheterisation period. In addition, the route of administration (oral or intravenous, but not topical) was considered. Antibiotic prophylaxis versus no prophylaxis: UTI: RR 0.20 [0.06, 0.66] (based on 1 trial and 90 patients) The limited evidence indicated that receiving prophylactic antibiotics reduced the rate of bacteriuria and other signs of infection, such as pyuria, febrile morbidity and gram-negative isolates in patients' urine, in surgical patients who undergo bladder drainage for at least 24 hours postoperatively. There was also limited evidence that prophylactic antibiotics reduced bacteriuria in non-surgical patients.
Marschall 2013 SR and MA RCT and non-RCT to clarify whether antibiotic prophylaxis at the time of urinary catheter removal confers a benefit in terms of preventing subsequent symptomatic urinary tract infections. Search date November 2012 All adults requiring short-term urinary urethral and supra-pubic catheterisation (up to and including 14 days) in hospital A: antibiotic prophylaxis B: no prophylaxis 6 RCTs and 1 non-randomized controlled intervention study. Studies were heterogeneous in the type and duration of antimicrobial prophylaxis and the period of observation. antibiotic prophylaxis was associated with benefit to the patient (absolute reduction in risk of urinary tract infection 5.8% (RR 0.45 (95% CI 0.28 to 0.72). number needed to treat to prevent one urinary tract infection was 17 (CI 12 to 30). Patients admitted to hospital who undergo short term urinary catheterization might benefit from antimicrobial prophylaxis when the catheter is removed as they experience fewer subsequent urinary tract infections. Potential disadvantages of more widespread antimicrobial prophylaxis (side effects and cost of antibiotics, development of antimicrobial resistance) might be mitigated by the identification of which patients are most likely to benefit from this approach.
Niel-Weise 2005_Antibt iotic SR Cochrane of RCT and quasi-RCT To determine if certain antibiotic policies are better than others in terms of prevention of urinary tract infections, complications, quality of life and costeffectiveness in shortterm catheterised adults. All adults requiring short-term urethral catheterization (up to and including 14 days) in hospital for urine monitoring, investigations, acute retention problems, acute incontinence problems and after surgery. The interventions considered were: antibiotic prophylaxis (continuous use), use of antibiotics if clinically indicated (e.g. pain, fever) and use of antibiotics if microbiologically indicated (growth of bacteria from a specimen of urine in the absence of clinical symptoms, density of bacteria taken as positive as defined by the trialists). the route of administration (oral or intravenous, but not topical) was considered. symptomatic urinary tract infection (1 trial): less common in the prophylaxis group (RR 0.20, 95% CI 0.06 to 0.66) There was weak evidence that antibiotic prophylaxis compared to giving antibiotics when clinically indicated reduced the rate of symptomatic urinary tract infection in female patients with abdominal surgery and a urethral catheter for 24 hours. The limited evidence indicated that receiving antibiotics during the first three postoperative days or from postoperative day two until catheter removal reduced the rate of bacteriuria and other signs of infection such as pyuria and gramnegative isolates in patients urine in surgical patients with bladder drainage for at least 24 hours postoperatively. There was also limited evidence that prophylactic antibiotics reduced bacteriuria in nonsurgical patients.
Pfefferkorn 2009 RCT Switzerland To assess whether antibiotic prophylaxis at urinary catheter removal reduces the rate of urinary tract infections patients undergoing elective abdominal surgery A: With antibiotic prophylaxis (3 doses of trimethoprimsulfamethoxazole at urinary catheter removal) (n =103) B: without antibiotic prophylasis (n= 102) Symptomatic urinary tract infection: A: 4,9% B: 21,6% (p= < 0.001) Antibiotic prophylaxis with trimethoprimsulfamethoxazole on urinary catheter removal significantly reduces the rate of symptomatic urinary tract infections and bacteriuria in patients undergoing abdominal surgery with perioperative transurethral urinary catheters.
Pickard 2012 RCT, multicenter, with economic analysis UK Do antimicrobial catheters reduce the rate of symptomatic urinary tract infection (UTI) during short-term hospital use and is their use cost-effective for the UK NHS? Adults (≥ 16 years of age) requiring urethral catheterisation (which was expected to be required for a maximum of 14 days), from selected hospital wards with a high volume of shortterm catheterisation. A: nitrofurazone-impregnated silicone urethral catheter (n = 2153) B: silver alloy-coated latex hydrogel urethral catheter (n = 2097) C polytetrafluoroethylene (PTFE) coated catheter (control group) (n = 2144) symptomatic antibiotic-treated UTI within 6 weeks of randomization: Nitrofurazone vs PTFE: OR 0.81 (0.65 to 1.01); p=0.031
Silver alloy vs PTFE: OR 0.96 (0.78 to 1.19); p=0.69
The trial estimate of clinical effectiveness for nitrofurazone-impregnated catheters was less than the pre-specified minimum absolute risk difference that we considered important (-3.3%), and the surrounding CI included zero, indicating that any reduction in catheter-associated UTI was uncertain. Economic analysis, although associated with uncertainty, suggested that nitrofurazone-impregnated catheters may be cost-effective for the NHS. The trial ruled out the possibility that silver alloycoated catheters might reach the pre-set degree of clinical effectiveness and that their use was unlikely to be cost-effective.
Reiche 2000 RCT Denmark To test the effect on urinary tract infections (UTIs) in patients needing continuous indwelling catheterization, of a newly designed urinecollecting system containing an antibacterial device which slowly releases silver ions onto the inner surface of the system. 213 adult patients newly catheterized A: active AB system containing a silver-releasing sodium-calcium phosphate ingot (n=83) B: control (n=87) They were randomized to a urine drainage system (comprising a Unometer 400 metering system or PP 2000N closed urine-bag system, both from Maersk Medical, Denmark) either with or without the antibacterial device There were fewer UTIs in those using the system containing the antibacterial device (19% vs 24%) HR (the probability of having a UTI using an AB bag compared with a control bag) 0.68 (95% CI 0.33±1.28) The potential importance of different infection routes were highlighted, suggesting that modifications to Foley catheters and urine-collecting systems attempting to prevent UTIs should focus not only on the intraluminal pathway, but on the internal and external pathways of infection.
Rogers 2004 RCT, multicenter USA to determine if antibiotic prophylaxis with nitrofurantoin monohydrate macrocrystals (study drug) after pelvic organ prolapse and/or urinary incontinence surgery with suprapubic catheterization (SPC) decreases urinary tract infection (UTI) compared with placebo in a randomized, double- blind, multicenter trial patients undergoing surgical correction of stress urinary incontinence and/or pelvic organ prolapse A: antibiotic prophylaxis with nitrofurantoin (n = 211)
Placebo (n = 224)
suprapubic catheters
Antibiotic prophylaxis decreased symptomatic UTI at suprapubic catheters removal (7.2% vs 19.8%, p= 0.001) Antibiotic prophylaxis with nitrofurantoin monohydrate macrocrystals decreases UTI compared with placebo after pelvic organ prolapse and/or urinary incontinence surgery with suprapubic catheterization.
Stenzilius 2011 RCT Sweden to compare the incidence of catheterassociated bacteriuria with a noble metal alloy-coated latex catheter or a noncoated silicone catheter in patients undergoing elective orthopaedic surgery with short-term catheterization adult patients undergoing elective orthopaedic surgery A: Noble metal alloy-coated latex (n=222) B: silicone Foley catheter (n=217) For both catheter types the size 12 Ch (Charriére) was used catheter-associated urinary tract symptoms A: 22.1 B: 22.9 P= 0.849 This study confirmed previous results that the noble metal alloy coating significantly reduces the risk of catheter-associated bacteriuria in short-term catheterization (1- 3 days). Female gender and obesity were significant risk factors for developing bacteriuria, while the use of an open drainage system and insertion of the catheter on the ward were not. owing to the limited numbers the results should be interpreted with caution.
Van Hees 2011 RCT The Netherlands January 2005 until December 2006 we investigated the effects of a singledose antibiotic regimen, before removing urinary catheters, on the occurrence of significant bacteriuria (SBU) and UTI. Patients scheduled to undergo major surgery, such as an abdominal operation or hip surgery A: ciprofloxacin (500 mg)) (n = 43) B: co-trimoxazole (960 mg) (n= 46) C: placebo (n = 51) Antibiotic therapy was administered 2 hours before catheter removal Symptomatic UTI A: 1/31 (3%) B: 0/24 (0%) C: 1/36 (3%) our results do not support antibiotic prophylaxis for urinary catheter removal in non-genitourinary surgical patients.
Wazait 2004 RCT UK to assess if a short course of ciprofloxacin starting at the time of catheter removal reduced the UTI rate after removal. Patients across specialities with a urethral catheter in situ for ≥ 48 h and ≤ 7 days A: 48-h course of ciprofloxacin starting 2 h before catheter removal (= 25) B: placebo (n=23) FU was at 7 and 14 days A: 2 patients had a UTI at the time of catheter removal; both infections was sensitive to ciprofloxacin. Four patients (16%) had a UTI after catheter removal and two of these were symptomatic (8%). The risk of UTI (both symptomatic and asymptomatic) after removing a urethral catheter is real, even in absence of catheter associated UTI before removal. UTIs occurring after removing a short-term urinary catheter had a high rate of resistance to ciprofloxacin. There was no detectable significant benefit in using prophylactic ciprofloxacin to reduce the UTI rate after catheter removal.
Studies on education programs
Chen 2013 RCT Taiwan April through November 2008 to evaluate the outcomes of the use of the criteria-based reminder system on the removal of indwelling catheters patients from 2 respiratory intensive care units with indwelling urinary catheter Group A (147 patients): use removal criteria Group B (131 patients): Without use of removal criteria CAUTI: B: 34 (26) A: 20 (14) RR 0.52 ((0.32-0.86), p<0.01) Use of a criteria-based reminder to remove indwelling urinary catheters can diminish the use of urinary catheterization and reduce the likelihood of catheterassociated urinary infections.
Durant 2017 SR on casecontrol studies to evaluate nursedriven protocols (NDP) and the prevention of catheter-associated urinary tract infections 29 studies included studies were conducted primarily in intensive care units and several in academic hospitals Group A: NDP Group B: prior practice Several studies reported a reduction in the number of CAUTIs and CAUTI rate NDPs appear to have a positive impact on the clinical predictors and prevalence of CAUTI; need for improving the study design of quality
Gould 2017 SR on RCT and nonRCT to help develop an intervention to improve catheter management and reduce CAUTI specifically in the nursing home environment where implementation of infection prevention guidelines is reported to be more challenging than in hospitals people in nursing homes or longterm care facilities 8 studies included Implementation of clinical guidelines Three studies evaluated the impact of implementing a complete clinical guideline. Five additional studies evaluated the impact of implementing individual elements of a clinical guideline. [For detailed CAUTI results of primary studies see Table 2] There is a need to ensure that evidencebased clinical guidelines to prevent CAUTI in residents catheterized long term are implemented in nursing homes. Before this work can be undertaken, feasibility studies are required to establish what can be achieved in these settings.
Lee 2015 RCT Taiwan to evaluate the effects of a nurse–family partnership model on the self-efficacy of family caregivers (FCs) and the incidence of CAUTI patients with an indwelling urinary catheter Group A (40 patients): nurse attended a 4 h training course Group B (41 patients): routine nursing care CAUTI: A: 6 (20%) B: 12 (38.8%) (p NS) Our study considered caregivers as partners in caring for patients with indwelling catheters, and we examined an intervention to enhance the self-efficacy of FCs in urinary catheter-associated care to reduce the occurrence of CAUTIs. The results showed that the effects of the intervention did not differ statistically. The self-efficacy of caregivers and the occurrence of CAUTIs in patients in the two groups were statistically equivalent.
Loeb 2008 RCT Canada January 2004 to June 2006 To assess whether stop orders for indwelling urinary catheters reduces the duration of inappropriate urinary catheterization and the incidence of urinary tract infections. hospitalized patients admitted to hospital with indwelling urinary catheters inserted for ≤ 48 h. Group A (347 patients): Stop order group Group B (345 patients): usual care group A: 51 (19%)/269 B: 51 (20%)/252 RR 0.94, (95% CI, 0.66 to 1.33, p NS) Stop orders for urinary catheterization safely reduced duration of inappropriate urinary catheterization in hospitalized patients but did not reduce urinary tract infections.
Meddings 2010 SR and MA on intervention al studies (trials and pre-/post-) Search date August 2008 to evaluate the effect of interventions that remind clinicians of the presence of urinary catheters to prompt the timely removal of catheters during hospitalization. catheter removal in hospitalized adults 14 studies included intervention that functioned to remind physicians or nurses to remove unnecessary urinary catheters Any urinary catheter The rate of CAUTI (episodes per 1000 catheter-days) was reduced by 52% (P < 0.001) with use of a reminder or stop order (7 studies included in ma): RR 0.48 (0.28-0.68) Urinary catheter reminders and stop orders appear to reduce the rate of CAUTI and should be strongly considered to enhance the safety of hospitalized patients. Intervention details varied among studies
Meddings 2017 SR on comparison studies Search date June 2015 To identify strategies to reduce UTIs in nursing home residents. nursing home residents 20 records describing 19 interventions were included: 8 randomized controlled trials, 10 pre-post nonrandomized interventions, and 1 nonrandomized intervention with concurrent controls. urinary catheter use such as improving appropriate use, aseptic placement, maintenance care, and prompting removal of unnecessary catheters, single and multiple interventions The 19 studies reported 12 UTI outcomes, 9 CAUTI outcomes, 4 bacteriuria outcomes, and 5 catheter use outcomes. Five studies showed CAUTI reduction (1 significantly); 9 studies showed UTI reduction (none significantly); 2 studies showed bacteriuria reduction (none significantly). Four studies showed reduced catheter use (1 significantly). Several practices, often implemented in bundles, such as improving hand hygiene, reducing and improving catheter use, managing incontinence without catheters, and enhanced barrier precautions, appear to reduce UTI or CAUTI in nursing home residents. Studies were often underpowered to assess statistical significance; none were pooled given variety of interventions and outcomes. The outcome definitions of UTI and CAUTI varied widely: some using definitions specific for nursing home settings such as McGeer's criteria, other reported symptomatic CAUTIs per 1000 catheter-days, others reported symptomatic CAUTIS per 1000 resident-days, others reported symptomatic CAUTIs as counts, or CAUTIs as part of a combined outcome (ie, bacteriuria, CAUTI, or death).
Mody 2015 RCT USA May 2010 to April 2013 To test whether a multimodal targeted infection program reduces the prevalence of multidrug-resistant organisms and incident device-related infections. high-risk nursing home residents with urinary catheters, feeding tubes, or both (n=418) A: intervention: Multimodal, including preemptive barrier precautions, active surveillance for multidrug-resistant organisms and infections, and nursing home staff education. B: control Urinary catheter: A: 59,1 % B: 32,6 % First New CAUTI, All (n = 166 Residents): HR 0.54 (0.30-0.97) All New CAUTI, Includes Recurrent Infection (n = 166 Residents): HR 0.69 (95% CI, 0.49-0.99) Our multimodal targeted infection program intervention reduced the overall multidrugresistant organisms (MDRO) prevalence density, new methicillin-resistant S aureus acquisitions, and clinically defined catheter-associated urinary tract infection rates in high-risk NH residents with indwelling devices. subgroup of urinary catheter population included
Wilde 2015 RCT USA to determine effectiveness of a selfmanagement intervention in prevention of adverse outcomes 202 adult longterm urinary catheter users A: learning catheter-related selfmonitoring and self- management skills during home visits by a study nurse B: usual care Us of urethral and suprapubic catheters CAUTI at 12 months: Rate group A: 4,89 (4.12-5.75) Rate group B: 4.12 (3.42-4.91) A simple-to-use catheter problems calendar and the bimonthly interviews might have functioned as a modest selfmonitoring intervention for persons in both groups. A simplified intervention using a self-monitoring calendar is suggested-with optimal and consistent fluid intake likely to add value.
Catheter vs. no catheter
Li 2011 SR on RCT and abservation als To assess whether it is necessary to place indwelling urinary catheters routinely in caesarean section, and to determine the effects of this procedure on UTIs, urinary retention, intraoperative difficulties, operative complications, as well as other outcomes. Three trials (two RCTs and one NRCT) were included (based on 084 participants) A: Routine catheterisation with indwelling catheter before surgery: the catheterised group (CG). B: No catheterisation before surgery and catheterised only when indicated: the uncatheterised group (UG). Compared with the use of indwelling urinary catheters, nonuse had a significantly lower incidence: UTIs: [RR 0.08; 95% CI 0.01, 0.64 (study design: RCT); RR 0.10; 95% CI 0.02, 0.57 (study design: NRCT)] The nonuse of indwelling urinary catheters in caesarean section is associated with less UTIs and no increase in either urinary retention or intra-operative difficulties. Our results suggest that the routine use of indwelling urinary catheters for caesarean delivery in haemodynamically stable patients is not necessary, and can be harmful. However, better and larger randomised trials are needed to confirm these findings.
Nasr 2009 RCT, multicenter Egypt To prospectively investigate the effects on urinary tract infection (UTI) of indwelling urinary catheter placement during cesarean delivery Female patients during caesarian delivery A: Uncatheterized (study) group (n=210) B: Catheterized (control) group (n=210) the incidence of UTI was significantly greater in the catherization group (P<0.001) Non-placement of indwelling urinary catheter during cesarean was more convenient to women with no increase in intraoperative complications, or urinary retention. Indwelling catheter placement in hemodynamically stable patients proved not to be beneficial in this study. Symptoms of UTI are assessed and presented separately (Urinary pain, Burning on urination, Frequency, Urgency, Hematuria (dipstick), Urine nitrate (dipstick)
Mixed assessments:
Cooper 2016 SR Cochrane of RCT Search date May 2016 To determine the effectiveness of different policies for replacing long-term indwelling urinary catheters in adults. Adults with longterm (> 14 days) indwelling urinary or suprapubic catheters that are anticipated to require replacement. 3 RCTs included (based on 107 patients) The following types of interventions were compared with each other: 1. One interval versus another interval between catheter replacement 2. Antibiotic prophylaxis versus no prophylaxis at the time of catheter replacement 3. Replacing catheter versus other policy e.g. washouts 4. Replacing in home environment versus clinical environment 5. Clean versus aseptic technique for replacing catheter 6. Cleaning solution A versus cleaning solution B 7. Lubricant A versus lubricant B or no lubricant 8. Catheter users versus carer versus health professional performing the catheter replacement procedure lower incidence of symptomatic UTI in people whose catheter was changed both monthly and when clinically indicated vs to only when clinically indicated (1 study): RR 0.35, 95%CI 0.13 to 0.95 There is currently insufficient evidence to assess the value of different policies for replacing long-term urinary catheters on patient outcomes. In particular, there are a number of policies for which there are currently no trial data; and a number of important outcomes which have not been assessed, including patient satisfaction, quality of life, urinary tract trauma, and economic outcomes. All the included trials were small and underpowered
Ercole 2013 integrative review of SR and RCT Search date Nov 2010 to seek the best evidence available in the literature concerning the knowledge produced and related to the techniques of intermittent and indwelling urinary catheterization 28 RCT included, 9 SR different catheters, different removal policies the infection rate in the urinary tract does not alter whether the perineum is cleaned with sterile water or not, or with the use of povidone-iodine solution or chlorhexidine; or using clean or sterile technique. The use of an intermittent catheter with clean technique results in low rates of complications or infections compared to the use of an indwelling catheter. The removal of the catheter in up to 24 hours after surgery and the use of an antimicrobial-impregnated or hydrophiliccoated catheter reduce urinary tract infection. there are controversies in relation to periurethral cleansing technique, the type of material the catheter is made of, and some procedures for the maintenance and removal of the catheter.
Kringel 2010 RCT, 3 arm Germany we analyzed different protocols of postoperative drainage Patients with an indicated anterior colporrhaphy plus an optional further procedure (i.e., hysterectomy) Group A (100 patients): urinary catheter for 24 h Group B (100 patients): urinary catheter for 96 h Group C (32 patients): suprapubic urinary catheter for 96 h UTI: A: 2 B: 6 C: 0 (p=0.155) The optimal bladder catheter after anterior colporrhaphy was, in our trial, the IUC for 24 h.
Leone 2004 SR on trials Search date 2002 prevention and management of CAUTI in patients hospitalized in ICU. 24 trials included The absence of data pertaining to ICU patients led us to include studies involving surgical and/or medical patients different catheters There is no consensus on the use of urinary reagent tests for diagnosis. The prevention of CAUTI in ICU patients does not require expensive devices. Neither complex closed drainage systems nor silver-coated urinary catheters have demonstrated efficacy in comparative randomized clinical trials. The lack of data on CAUTI in ICU patients leads physicians to manage them empirically according to author opinions and personal beliefs.
Liang 2009 RCT, 3 arm Taiwan July 2007 to January 2008 to assess the impact of bladder catheterization on the incidence of postoperative urinary tract infection (UTI) and urinary retention (PUR) following laparoscopic-assisted vaginal hysterectomy (LAVH) patients with benign gynecologic disease scheduled for inpatient LAVH Group A (50 patients): no catheter use Group B (50 patients): indwelling bladder catheter use for 1 day Group 3 (50 patients): indwelling bladder-catheter-use for 2 days UTI: A: 2 (4) B: 3 (6) C: 9 (18) (p= 0.034) although the incidence of catheter associated UTI following LAVH was confounded by the use of prophylactic antibiotics in our study, the data suggest that the duration of catheterization was the most important predictor for postoperative adverse urinary events. Short term indwelling catheterization increased the incidence of UTI, but decreased the incidence of PUR among patients undergoing LAVH.
Phipps 2006 SR Cochrane of RCT and quasi-RCT To establish the optimal way to manage urinary catheters following urogenital surgery in adults All adults undergoing urogenital surgery. Any catheter intervention: • urinary catheterisation, by urethral, suprapubic or both routes; • use of PVC, silicone or latex catheters; • use of 2-way or 3-way catheters, all sizes; • use of bladder irrigation and/or wash-out; • use of antibiotic policies regarding catheter manipulation; • use of policies regarding postoperative timing of catheter removal; • use of policies regarding time of day of catheter removal; • use of policies regarding bladder filling prior to catheter removal; • use of clamping of catheter prior to removal; • use of post void residual volume measurement prior to suprapubic catheter removal; • use of policies for assessment following catheter removal. Urinary tract infection: USING A URINARY CATHETER VS NOT USING A URINARY CATHETER (4 studies): RR 1.35 [0.75, 2.45] (Favours no catheter) URETHRAL CATHETERISATION VS SUPRAPUBIC CATHETERISATION (4 studies): RR 1.16 [0.54, 2.48] (Favours suprapubic) COMPARISON TYPES OF CATHETER: Urethral foley catheter with extra drainage hole VS unmodified foley catheter (1 study): RR 0.40 [0.15, 1.04] (favours foley c.) ONE TYPE OF CATHETERMANAGEMENT IS BETTERTHAN ANOTHER (1 study each): Vaginal cleansing before catheter insertion vs vaginal cleansing after catheter insertion: RR 0.61 [0.33, 1.14] Cefotaxime 1hr prior to catheter removal (versus none: RR 0.08 [0.00, 1.30] Instillation with Neomycin and Sulfamethiozole via urethral catheter following surgery (I) versus placebo: 0.18 [0.06, 0.55] SHORT DURATION CATHETER USE VS LONG DURATION CATHETER USE: Post-op urethral catheter for 1 day versus catheter for 2 days (1 study): RR 0.52 [0.05, 5.40] Post-op urethral catheter for 1 day versus post-op urethral catheter for 3 days (3 studies, not pooled): RRs 0.20 [ 0.03, 1.59]; 0.49 [0.13, 1.80]; 0.60 [ 0.32, 1.13] Post-op catheter for 1 day versus postop catheter for 5 days (2 studies, not pooled): RRs 0.11 [0.03, 0.43]; 0.70 [ 0.29, 1.67] Post-op urethral catheter for 1 day versus post-op catheter for 14 days (1 study): RR 0.21 [0.03, 1.65] CLAMP AND RELEASE POLICIES BEFORE CATHETER REMOVAL VS free IMMEDIATE CATHETER REMOVAL (1 study): RR 4.00 [1.55, 10.29] (Favours free) Despite reviewing 39 eligible trials, few firm conclusions could be reached because of the multiple comparisons considered, the small size of individual trials, and their low quality. Whether or not to use a particular policy is usually a tradeoff between the risks of morbidity (especially infection) and risks of recatheterisation.
Abbreviations: SR systematic review, MA metaanalysis, h hours, UTI urinary tract infection, n number of patients, RR risk ratio, HR hazard ratio, OR odds ratio, p p-value, CI confidence interval, OP operation, RCT randomized controlled trial